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https://github.com/dreymonde/Time

🕰 Type-safe time calculations in Swift
https://github.com/dreymonde/Time

generics ios swift time

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🕰 Type-safe time calculations in Swift

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README 

        
# Time



[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fdreymonde%2FTime%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/dreymonde/Time)

[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fdreymonde%2FTime%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/dreymonde/Time)



This micro-library is made for you if:



- You have ever written something like this:



```swift

let interval: TimeInterval = 10 * 60

```



To represent 10 minutes.



## Usage



#### Showcase



```swift

import Time



let tenMinutes = 10.minutes

let afterTenMinutes = Date() + 10.minutes

let tenMinutesAndSome = 10.minutes + 15.seconds

let tenMinutesInSeconds = 10.minutes.inSeconds

if 10.minutes > 500.seconds {

    print("That's right")

}

```



#### Basics



**Time** is not just a bunch of `Double` conversion functions. The main advantage of it is that all time units are _strongly-typed_. So, for example:



```swift

let tenMinutes = 10.minutes

```



Here `tenMinutes` will actually be of type `Interval` (not to be confused with **Foundation**'s `TimeInterval`). There are seven time units available, from nanoseconds to days:



```swift

public extension Double {

    

    var seconds: Interval {

        return Interval(self)

    }

    

    var minutes: Interval {

        return Interval(self)

    }

    

    var milliseconds: Interval {

        return Interval(self)

    }

    

    var microseconds: Interval {

        return Interval(self)

    }

    

    var nanoseconds: Interval {

        return Interval(self)

    }

    

    var hours: Interval {

        return Interval(self)

    }

    

    var days: Interval {

        return Interval(self)

    }

    

}

```



#### Operations



You can perform all basic arithmetic operations on time intervals, even of different units:



```swift

let interval = 10.minutes + 15.seconds - 3.minutes + 2.hours // Interval

let doubled = interval * 2



let seconds = 10.seconds + 3.minutes // Interval

```



You can also use these operations on `Date`:



```swift

let oneHourAfter = Date() + 1.hours

```



#### Conversions



Time intervals are easily convertible:



```swift

let twoMinutesInSeconds = 2.minutes.inSeconds // Interval

```



You can also convert intervals to **Foundation**'s `TimeInterval`, if needed:



```swift

let timeInterval = 5.minutes.timeInterval

```



You can also use `converted(to:)` method:



```swift

let fiveSecondsInHours = 5.seconds.converted(to: Hour.self) // Interval

// or

let fiveSecondsInHours: Interval = 5.seconds.converted()

```



Although, in my opinion, you would rarely need to.



#### Comparison



You can compare different time units as well



```swift

50.minutes < 1.hour

```



#### Creating your own time units



If, for some reason, you need to create your own time unit, that's super easy to do:



```swift

public enum Week: TimeUnit {

    

    public static var toTimeIntervalRatio: Double {

        return 604800

    }

    

}

```



Now you can use it as any other time unit:



```swift

let fiveWeeks = Interval(5)

```



For the sake of convenience, don't forget to write those handy extensions:



```swift

public enum Week: TimeUnit {

    

    public static var toTimeIntervalRatio: Double {

        return 604800

    }

    

}



extension Interval {

    

    public var inWeeks: Interval {

        return converted()

    }

    

}



extension Double {

    

    public var weeks: Interval {

        return Interval(self)

    }

    

}



extension Int {

    

    public var weeks: Interval {

        return Interval(Double(self))

    }

    

}

```



#### Also



Also available:



- Get conversion rate:



```swift

let conversionRate = Hour.conversionRate(to: Second.self) // 3600.0

```



- GCD integration:



```swift

DispatchQueue.main.asyncAfter(after: 5.seconds) {

	// do stuff

}

```



## Installation



#### Swift Package Manager



Starting with Xcode 11, **Time** is officially available *only* via Swift Package Manager.



In Xcode 11 or greater, in you project, select: `File > Swift Packages > Add Package Dependency`



In the search bar type



```

https://github.com/dreymonde/Time

``` 



Then proceed with installation.



> If you can't find anything in the panel of the Swift Packages you probably haven't added yet your github account.

You can do that under the **Preferences** panel of your Xcode, in the **Accounts** section.



For command-line based apps, you can just add this directly to your **Package.swift** file:



```swift

dependencies: [

    .package(url: "https://github.com/dreymonde/Time", from: "1.1.0"),

]

```



#### Manual



Of course, you always have an option of just copying-and-pasting the code - **Time** is just two files, so feel free.



#### Deprecated dependency managers



Last **Time** version to support [Carthage][carthage-url] and [Cocoapods][cocoapods-url] is **1.0.1**. Carthage and Cocoapods will no longer be officially supported.



Carthage:



```ruby

github "dreymonde/Time" ~> 1.0.1

```



Cocoapods:



```ruby

pod 'TimeIntervals', '~> 1.0.1'

```



[carthage-url]: https://github.com/Carthage/Carthage

[cocoapods-url]: https://github.com/CocoaPods/CocoaPods